Geoege davidson  and william



(No Model.)

I G. DAVIDSON 8E W. W. CLAY.

NEEDLE CYLINDER FOR CIRCULAR KNITTING MAGHINBS. .No. 352,399. v PatentedNov. 9, 1886.

Wmses. fnyervfiors NITE AT PATENT Fries.

NEEDLE-CYLINDER FOR CIRCULAR-KNITTING MACHINES.

SPECIFICATION forming part of Letters Patent No. 352,399, dated November9, 1886.

Application filed April 22, 1886. Serial No. 199,808. (No model.)

To all whom it may concern.-

Be it known that we, GEORGE DAVIDSON, of the town of Paris, in thecounty of Brant, in the Province of Ontario, Canada, knitter, andWILLIAM WILLIAMS CLAY, of the same place, manufacturer, have jointlyinvented certain new and useful Improvements in N eedle-Cylinders forCircular Knitting Machines, of which the following is a specification.

The object of the invention is to so arrange the needles in theneedle-ring that each needle may be independently removed and replacedwithout disturbing any of the other needles in the needle-ring, andwhich ring is so connected to the cylinder-arms that it may be readilyremoved and replaced by another needle-ring of a different diameter; andit consists, essentially, of a peculiarly-formed needle-carrier made insections and having vertical grooves cut in it to receive the needles,which have peculiarly-shaped shanks to fit into the said grooves, eachplate being independently secured by ascrew-bolt passing through theholding-plate, the needle-carrier, and screwed into the needle-ring,which is detachably connected to the cylinder-arms,substantial] y in themanner as hereinafter more particularly explained.

Figure 1 is a perspective view, partially in section,of ourimproveddevice. Fig. 2 is a perspective independent view of the cylinder-armsand hub. Fig. 3 is an enlarged detail of a portion of the needle-carrierin which one needle is set. Fig. 4 is a detail of the needle.

In the drawings, A represents the four cylinder-arms, which areconnected to the machine in the ordinary manner. Each of. these arms hasa slot, a, through which the screws B pass in order to enter the screwedholes in the flange of the needle-ring C. I

- By forming the slots a in the arms A it will be noticed that we canreadily remove the needle-ring G and replace it with one of a differentdiameter; but as the screws B might not secure the ring 0 withsufficient rigidity, we place on the arms A a series of holding-pins, b,which enter corresponding holes made in the flange of the needle-ring O.

D is a needle-carrier, made, as indicatedin Fig. 1, in sections, so thatit can be readily removed and replaced when necessary. On the inside ofthe needle-carrier D we form a projection or wide rib, d, to fit into arecess made f of the needles, each of which shanks is made a snug fit ofits respective groove, all of which are exactly the same size and shape,so that the needles are interchangeable. The end of the-shank f is bent,as at 9, so that when the shank is titted into its groove e its bent endy will fit in to a notch, h, made in the bottom side of a shoulder, t,made in the outside of the carrier, d, at the base of the slots. Infitting each needle into its groove the end g is first slipped into itsnotch h. The shank f is then pressed into its notch,and the beveledshoulder j, formed on the shank, butts against the top edge of theneedle-carrierD, and the needle is thus rigidly held from moving ineither vertical direction. When the needles are placed in position, the

holding-plates E are put on separately, and are secured in position bythe screw-bolts F,which pass through holes in the plate E and carrier D,and are screwed into the needle-ring C. When thus screwed in, the platesE hold the needles rigidly in position.

From this description it will be seen that by merely removing one of theplates E any single needle can be removed and replaced by anotherWithout disturbing any of the other needles in the needle-ring.

It will be noticed on reference to Fig. 1 that a groove is cut on theinner face of the holding-plates E, to receive the shoulderi when thesaid plate is screwed into position.

What we claim as our invention is- 1. The cylinder-arms A, having theslots a made in them, in combination with the detachable needle-ring O,secured in position by the I screws B and holding-pins b, substantiallyas and for the purpose specified.

2. The cylinder-arms A, needles, needle-carrier D, formed with wide ribcl and grooves e, to receive the shanks f of said needles, and

the needle-ring G,secured to the cylinder-arms and having a grooveformed on its outside to receive the rib d, combined with the detachableholding-plates E and means for holding said plates in position,substantially as and for the purpose specified.

3. The ring 0, the needles, the needle-carrier D,1nadein sections andhaving vertical grooves e formed in it, and aprojecting shoulder or rib,

5, made near its base, in combination with the f, and a notch, h, toreceive the end g, subslanl0 holdingplates E,secured by the screw-boltsF, tially as and for the purpose specified. and having grooves cut ontheir inner side to Paris, April 16, 1886. zficelve the shouider z,substantlally asand for GEORGE DAVIDSON e purpose speclfied. W W CLAY 4.A knitting machine needle having a shank, f, with a. bent end, 9, and a.beveled In presence of shoulder; j, in combination with a needle-car-WILLIAM BAIN, rier, D, having a slot, '6, to receive the shank 7 WILLIAMJ. TURNBULL.

